ELECTROCONDUCTIVE PASTE COMPOSITION AND BUMP ELECTRODE PREPARED BY USING SAME

摘要

PURPOSE: An electroconductive paste composition is provided to ensure electrical contact and powerful adhesion like a conductive metal foil and to impart wet-proof property and heat resistance to a substrate. CONSTITUTION: An electroconductive paste composition comprises electroconductive metal powder 75-90 weight% and binder 10-25 weight%. The electroconductive metal powder comprises a first spherical metal powder with average granularity of 0.4~0.8 micron, a second spherical metal powder with average granularity of 0.8~1.3 micron, a third spherical metal powder with average granularity of 2.0~3.0 micron, and a fourth plate-like metal powder with average granularity of 2.5~3.5 micron.